Home / News & Announcements / Case studies Case studies Posted on September 12, 2007 by Donna Spencer | Leave a comment Jul 2009. Card sorting for NTEN: Behind the scenes Sep 2008. Drupal.org – what we learned from the card sort Jun 2008. Conducting a card sort Eurostar Card Sorting Case Study—Etre Contribute! If you have a case study you would like me to add to this page, please let me know.